That is a very capable machine and should not be having issues. I suggest trying some of the tips others have suggested here before purchasing a new machine.
1. Remove the bottom panel and clean the fans. Here is a guide to remove the lower panel. Then take a look at the small gap between the fans and the heatsink fins. I suspect there is dust clogging the heatsink fins.
1. Remove the bottom panel and clean the fans. Here is a guide to remove the lower panel. Then take a look at the small gap between the fans and the heatsink fins. I suspect there is dust clogging the heatsink fins.
https://www.ifixit.com/Guide/MacBook+Pro+16-Inch+2019+Lower+...
2. Reset the SMC. Follow the steps here. You would use the steps for "Laptop Computer with T2 Chip" https://support.apple.com/en-us/HT201295